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UOP
Standard
Withdrawn, Replaced
Last Updated: Jul 25, 2002
Track Document
UOP211-79
Caustic Solutions Analysis - Liberation Method
Caustic Solutions Analysis - Liberation Method
UOP211-79
UOP|UOP211-79|en-US
Caustic Solutions Analysis - Liberation Method
Standard
Caustic Solutions Analysis - Liberation Method>
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This method is for plant control analysis of used refinery caustic solutions. It is especially useful for solutions containing Merox catalyst used for the extraction or sweetening of mercaptans. Two characteristics of a used caustic solution are determined; namely, total alkalinity and the caustic consumed by the presence of mercaptan. Free sulfur and polysulfide sulfur may interfere with the test. Hydrogen sulfide does not interfere.